Thanks so much Shaolin!!!On Next Obs Release (Very SooN TM), V21, You will have Safe margins in the Multiview.
Rulers is something that might be interesting as well and i suggest you go to our discord https://discord.gg/obsproject and leave the suggestion there! (Faster Interaction)
You want to draw on the display, to indicate what's being captured? I think a good proxy already exists for that:what I'm trying to find is safe margins should overlay on my actual windows, not inside OBS studio.
For example a free screen recording software, ShareX gives this overlay when I'm actually doing work in whatever window I want. HereI was scrolling through youtube and I could actually see in realtime what area is being captured in the screen recording.
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